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<div class="title">DataflowAnalysis.cs</div>  </div>
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<div class="contents">
<a href="_dataflow_analysis_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">using</span> System.Collections.Generic;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">using</span> System.Collections.ObjectModel;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">using</span> System.Diagnostics;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">using</span> System.Diagnostics.Contracts;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">using</span> System.Linq;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keyword">using</span> SystemSharp.Collections;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">using</span> SystemSharp.Components;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keyword">using</span> SystemSharp.SetAlgorithms;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keyword">using</span> SystemSharp.SysDOM;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">using</span> SystemSharp.TreeAlgorithms;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">namespace </span>SystemSharp.Analysis</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;{</div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">   37</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    {</div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">   39</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">enum</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">EMergeResult</a></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        {</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;            NoChange,</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;            Change</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        }</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        <span class="keyword">private</span> HashSet&lt;int&gt;[] _asmts;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">bool</span>[] _fixedLocals;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">bool</span>[] _sideFx;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">bool</span> _succMerge;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a78f7229839d2f3992ffe9d74595018bb">   54</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a78f7229839d2f3992ffe9d74595018bb">VarAssignmentSet</a>(<span class="keywordtype">int</span> numVariables)</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        {</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;            _asmts = <span class="keyword">new</span> HashSet&lt;int&gt;[numVariables];</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;            _sideFx = <span class="keyword">new</span> <span class="keywordtype">bool</span>[numVariables];</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            _fixedLocals = <span class="keyword">new</span> <span class="keywordtype">bool</span>[numVariables];</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        }</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a7d9c349760703613a0666c434a0fe636">   64</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a7d9c349760703613a0666c434a0fe636">IndicateSideEffects</a>()</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        {</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; _sideFx.Length; i++)</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;            {</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;                <span class="keywordflow">if</span> (_asmts[i] != null)</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;                    _sideFx[i] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            }</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        }</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a432b64aa90a8a7c2a4aaeef65f6e7bb3">   78</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a432b64aa90a8a7c2a4aaeef65f6e7bb3">HasSideEffects</a>(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        {</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;            <span class="keywordflow">return</span> _sideFx[localIndex];</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        }</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a74c43889538964f79dac1fea9a121ad2">   86</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a74c43889538964f79dac1fea9a121ad2">SetInitial</a>()</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        {</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; _asmts.Length; i++)</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;                _asmts.Add(i, -1);</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        }</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a58ca9909b9d7936af913bc8e09e4d609">   97</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a58ca9909b9d7936af913bc8e09e4d609">Assign</a>(<span class="keywordtype">int</span> localIndex, <span class="keywordtype">int</span> rhs)</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        {</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;            <span class="keywordflow">if</span> (_asmts[localIndex] != null)</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;                _asmts[localIndex].Clear();</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            _asmts.Add(localIndex, rhs);</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            _sideFx[localIndex] = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            _fixedLocals[localIndex] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        }</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a05d39f38821f17dd2480f3444ea1ac70">  111</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">EMergeResult</a> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a05d39f38821f17dd2480f3444ea1ac70">Merge</a>(<a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a> other)</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        {</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">EMergeResult</a> result = _succMerge ? EMergeResult.NoChange : EMergeResult.Change;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            _succMerge = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; other._asmts.Length; i++)</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;            {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                <span class="keywordflow">if</span> (_fixedLocals[i])</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                    <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                HashSet&lt;int&gt; rhss = other._asmts[i];</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                <span class="keywordflow">if</span> (rhss != null)</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                {</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;                    <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> rhs <span class="keywordflow">in</span> rhss)</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                    {</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                        <span class="keywordflow">if</span> (_asmts.Add(i, rhs))</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;                            result = <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">EMergeResult</a>.Change;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                    }</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                }</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                <span class="keywordflow">if</span> (other._sideFx[i] &amp;&amp; !_sideFx[i])</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                {</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;                    _sideFx[i] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                    result = EMergeResult.Change;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;                }</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;            }</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        }</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div>
<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a98571dcf9f54d0c4b6254dab78fd8c95">  145</a></span>&#160;        <span class="keyword">public</span> IEnumerable&lt;int&gt; <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a98571dcf9f54d0c4b6254dab78fd8c95">GetStorePoints</a>(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            <span class="keywordflow">return</span> _asmts.Get(localIndex);</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        }</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    }</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    [AttributeUsage(AttributeTargets.Method)]</div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_break_on_dataflow_analysis.html">  155</a></span>&#160;    <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_system_sharp_1_1_analysis_1_1_break_on_dataflow_analysis.html">BreakOnDataflowAnalysis</a> :</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        Attribute</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    {</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    }</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html">  164</a></span>&#160;    <span class="keyword">public</span> <span class="keyword">class </span>DataflowAnalyzer&lt;Ti&gt;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        where Ti: <a class="code" href="interface_system_sharp_1_1_analysis_1_1_i_instruction.html">IInstruction</a></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    {</div>
<div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html">  170</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">class </span>ReadAfterWritePair</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        {</div>
<div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html#a762dd886a21bbe7c554036edd7982324">  175</a></span>&#160;            <span class="keyword">public</span> <span class="keywordtype">int</span> StorePoint { <span class="keyword">get</span>; <span class="keyword">private</span> set; }</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html#a2110c78f71b7163fed9e829bc3a036b6">  180</a></span>&#160;            <span class="keyword">public</span> <span class="keywordtype">int</span> ReadPoint { <span class="keyword">get</span>; <span class="keyword">private</span> set; }</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div>
<div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html#ac07c9b48c624f7c61b9ab90aedceab41">  182</a></span>&#160;            <span class="keyword">public</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html#ac07c9b48c624f7c61b9ab90aedceab41">ReadAfterWritePair</a>(<span class="keywordtype">int</span> storePoint, <span class="keywordtype">int</span> readPoint)</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;            {</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                StorePoint = storePoint;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                ReadPoint = readPoint;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;            }</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        <span class="keyword">class </span>SetAdapter : ISetAdapter&lt;int&gt;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        {</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;            <span class="keyword">private</span> IPropMap&lt;int, int&gt; _indexMap;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;            <span class="keyword">public</span> SetAdapter(IPropMap&lt;int, int&gt; indexMap)</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            {</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                _indexMap = indexMap;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            }</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="preprocessor">            #region ISetAdapter&lt;int&gt; Member</span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            <span class="keyword">public</span> IPropMap&lt;int, int&gt; Index</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;            {</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                <span class="keyword">get</span> { <span class="keywordflow">return</span> _indexMap; }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            }</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="preprocessor">            #endregion</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="preprocessor"></span>        }</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a182e8f1c8958fa8c276ee171f34e07eb">  211</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="interface_system_sharp_1_1_analysis_1_1_i_instruction_info_3_01_ti_01_4.html">IInstructionInfo&lt;Ti&gt;</a> InstructionInfo { <span class="keyword">get</span>; <span class="keyword">private</span> set; }</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div>
<div class="line"><a name="l00216"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#acaaa6b9f08d1db135f00e08a4d9de66e">  216</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="interface_system_sharp_1_1_analysis_1_1_i_extended_instruction_info_3_01_ti_01_4.html">IExtendedInstructionInfo&lt;Ti&gt;</a> XInstructionInfo { <span class="keyword">get</span>; <span class="keyword">private</span> set; }</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div>
<div class="line"><a name="l00221"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ac211949463f49a382181865b2c524b60">  221</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_control_flow_graph_3_01_ti_01_4.html">ControlFlowGraph&lt;Ti&gt;</a> Code { <span class="keyword">get</span>; <span class="keyword">private</span> set; }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">int</span> _numLocals;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="keyword">private</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a>[] _preConds;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        <span class="keyword">private</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a>[] _postConds;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">bool</span>[] _inhibitElimination;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        <span class="keyword">private</span> Ti _curILI;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        <span class="keyword">private</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a> _curPreCond;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <span class="keyword">private</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">VarAssignmentSet</a> _curPostCond;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        <span class="keyword">private</span> Dictionary&lt;int, HashSet&lt;int&gt;&gt; _varUses = <span class="keyword">new</span> Dictionary&lt;int, HashSet&lt;int&gt;&gt;();</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        <span class="keyword">private</span> HashSet&lt;int&gt;[] _loadPoints;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        <span class="keyword">private</span> HashSet&lt;int&gt;[] _storePoints;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">int</span>[] _refPoints;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        <span class="keyword">private</span> Dictionary&lt;int, List&lt;int&gt;&gt; _refUses;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;        <span class="keyword">private</span> Dictionary&lt;int, int&gt; _writeToRead;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        <span class="keyword">private</span> HashSet&lt;int&gt; _writtenAndNeverRead;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        <span class="keyword">private</span> HashSet&lt;int&gt; _eliminableLocals;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;        <span class="keyword">private</span> Dictionary&lt;Tuple&lt;int,int&gt;, <span class="keywordtype">int</span>&gt; _renamings;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> InhitbitElimination(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        {</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;            _inhibitElimination[localIndex] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        }</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">bool</span> IsEliminationInhibited(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        {</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;            <span class="keywordflow">return</span> _inhibitElimination[localIndex];</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        }</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> HandleCall()</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        {</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;            _curPostCond.IndicateSideEffects();</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;        }</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> HandleLdLoc(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        {</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;            <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> _curPreCond.GetStorePoints(localIndex))</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;                _varUses.Add(storePoint, _curILI.Index);</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;            _loadPoints[localIndex].Add(_curILI.Index);</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        }</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> HandleLdLoca(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        {</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;            _refPoints[_curILI.Index] = localIndex;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        }</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> HandleStLoc(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        {</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;            _curPostCond.Assign(localIndex, _curILI.Index);</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;            _storePoints[localIndex].Add(_curILI.Index);</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;        }</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;</div>
<div class="line"><a name="l00313"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a2befb94ddad5e22068310af0bd551918">  313</a></span>&#160;        <span class="keyword">public</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a2befb94ddad5e22068310af0bd551918">DataflowAnalyzer</a>(<a class="code" href="class_system_sharp_1_1_analysis_1_1_control_flow_graph_3_01_ti_01_4.html">ControlFlowGraph&lt;Ti&gt;</a> cfg, <span class="keywordtype">int</span> numLocals)</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;        {</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;            InstructionInfo = cfg.InstructionInfo;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;            XInstructionInfo = InstructionInfo as <a class="code" href="interface_system_sharp_1_1_analysis_1_1_i_extended_instruction_info_3_01_ti_01_4.html">IExtendedInstructionInfo&lt;Ti&gt;</a>;</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;            Code = cfg;</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;            _numLocals = numLocals;</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;            DetectReadAfterWrite = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;            DetectWriteAndNeverRead = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        }</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a1444066dc5f4f36edb5d991d4ef60036">  326</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> DetectReadAfterWrite { <span class="keyword">get</span>; set; }</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div>
<div class="line"><a name="l00331"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ae0ec8d42ae834a89c9449a4f4dd3742e">  331</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> DetectWriteAndNeverRead { <span class="keyword">get</span>; set; }</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;</div>
<div class="line"><a name="l00336"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a09649ef5921e6a0684fe3101560a351d">  336</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> DoNotOptimizeAcrossBasicBlocks { <span class="keyword">get</span>; set; }</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;        <span class="keyword">private</span> IEnumerable&lt;int&gt; GetReferencedLocals(IEnumerable&lt;int&gt; defPoints, out <span class="keywordtype">bool</span> containsUndefined)</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        {</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;            Contract.Requires(defPoints != null);</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            IEnumerable&lt;int&gt; tmp = defPoints.Select(i =&gt; _refPoints[i]).Distinct();</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;            IEnumerable&lt;int&gt; result = tmp.Where(i =&gt; i != -1);</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;            containsUndefined = tmp.Contains(-1);</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;            <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;        }</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> ProcessInstruction()</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        {</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;            <span class="keywordflow">switch</span> (InstructionInfo.Classify(_curILI))</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;            {</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;                <span class="keywordflow">case</span> EInstructionClass.Call:</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;                    HandleCall();</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;                <span class="keywordflow">case</span> EInstructionClass.LocalVariableAccess:</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;                    {</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                        <span class="keywordtype">int</span> localIndex;</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;                        <a class="code" href="namespace_system_sharp_1_1_analysis.html#a5ebdc38449ace206f5d7a926a47adb48">ELocalVariableAccess</a> lva = InstructionInfo.IsLocalVariableAccess(_curILI, out localIndex);</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;                        <span class="keywordflow">switch</span> (lva)</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;                        {</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;                            <span class="keywordflow">case</span> ELocalVariableAccess.ReadVariable:</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;                                HandleLdLoc(localIndex);</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                            <span class="keywordflow">case</span> ELocalVariableAccess.WriteVariable:</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;                                HandleStLoc(localIndex);</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;                            <span class="keywordflow">case</span> ELocalVariableAccess.AddressOfVariable:</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;                                HandleLdLoca(localIndex);</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                                <span class="keywordflow">if</span> (XInstructionInfo == null)</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;                                    InhitbitElimination(localIndex);</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;                            <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;                                <span class="keywordflow">throw</span> <span class="keyword">new</span> NotImplementedException();</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;                        }</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;                    }</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;                <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            }</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;        }</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> ProcessInstructionExtended()</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;        {</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;            IEnumerable&lt;ReferenceInfo&gt; inds = XInstructionInfo.GetIndirections(_curILI, Code);</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            <span class="keywordflow">foreach</span> (ReferenceInfo ri <span class="keywordflow">in</span> inds)</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            {</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;                <span class="keywordflow">if</span> (ri.Mode.HasFlag(ReferenceInfo.EMode.Read))</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;                {</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;                    <span class="keywordtype">bool</span> containsUndefined;</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;                    IEnumerable&lt;int&gt; refLocals = GetReferencedLocals(ri.ReachingDefinitions, out containsUndefined);</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;                    <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> localIndex <span class="keywordflow">in</span> refLocals)</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;                    {</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;                        <span class="keywordflow">if</span> (ri.Kind == ReferenceInfo.EKind.Indirect)</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;                            InhitbitElimination(localIndex);</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;                        HandleLdLoc(localIndex);</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;                    }</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;                }</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;                <span class="keywordflow">if</span> (ri.Mode.HasFlag(ReferenceInfo.EMode.Write))</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;                {</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;                    <span class="keywordtype">bool</span> containsUndefined;</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                    IEnumerable&lt;int&gt; refLocals = GetReferencedLocals(ri.ReachingDefinitions, out containsUndefined);</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;                    <span class="keywordflow">if</span> (refLocals.Count() &gt; 1)</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;                    {</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;                        <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> localIndex <span class="keywordflow">in</span> refLocals)</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;                        {</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;                            InhitbitElimination(localIndex);</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;                        }</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;                    }</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;                    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (refLocals.Count() == 1)</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;                    {</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;                        <span class="keywordtype">int</span> localIndex = refLocals.Single();</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;                        <span class="keywordflow">if</span> (ri.Kind == ReferenceInfo.EKind.Indirect)</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;                            InhitbitElimination(localIndex);</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;                        HandleStLoc(localIndex);</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;                    }</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;                }</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;                <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> ldaPoint <span class="keywordflow">in</span> ri.ReachingDefinitions)</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;                {</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;                    _refUses.Add(ldaPoint, _curILI.Index);</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;                }</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;            }</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        }</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> IterateToFixPoint()</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;        {</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;            List&lt;Ti&gt; instrs = Code.Instructions;</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;            _preConds = <span class="keyword">new</span> VarAssignmentSet[instrs.Count];</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;            _postConds = <span class="keyword">new</span> VarAssignmentSet[instrs.Count];</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;            _refPoints = <span class="keyword">new</span> <span class="keywordtype">int</span>[instrs.Count];</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;            _refUses = <span class="keyword">new</span> Dictionary&lt;int, List&lt;int&gt;&gt;();</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;            _inhibitElimination = <span class="keyword">new</span> <span class="keywordtype">bool</span>[_numLocals];</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;            Queue&lt;int&gt; q = <span class="keyword">new</span> Queue&lt;int&gt;();</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;            _loadPoints = <span class="keyword">new</span> HashSet&lt;int&gt;[_numLocals];</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;            _storePoints = <span class="keyword">new</span> HashSet&lt;int&gt;[_numLocals];</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; _numLocals; i++)</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;            {</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;                <span class="keywordflow">if</span> (Code.IsLocalPinned(i))</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;                    InhitbitElimination(i);</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;                _loadPoints[i] = <span class="keyword">new</span> HashSet&lt;int&gt;();</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;                _storePoints[i] = <span class="keyword">new</span> HashSet&lt;int&gt;();</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;            }</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; instrs.Count; i++)</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;            {</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;                _preConds[i] = <span class="keyword">new</span> VarAssignmentSet(_numLocals);</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;                _postConds[i] = <span class="keyword">new</span> VarAssignmentSet(_numLocals);</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;                _refPoints[i] = -1;</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;            }</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;            <span class="keywordtype">int</span> startIndex = Code.EntryCB.StartIndex;</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;            _preConds[startIndex].SetInitial();</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;            q.Enqueue(startIndex);</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;            IExtendedInstructionInfo&lt;Ti&gt; xinfo = InstructionInfo as IExtendedInstructionInfo&lt;Ti&gt;;</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;            <span class="keywordflow">while</span> (q.Count &gt; 0)</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;            {</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;                <span class="keywordtype">int</span> iidx = q.Dequeue();</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;                _curILI = Code.Instructions[iidx];</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;                _curPreCond = _preConds[iidx];</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;                _curPostCond = _postConds[iidx];</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;                _curPostCond.Merge(_curPreCond);</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;                ProcessInstruction();</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;                <span class="keywordflow">if</span> (xinfo != null)</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;                {</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;                    ProcessInstructionExtended();</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;                }</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;                Ti[] succs = Code.GetSuccessorsOf(_curILI);</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;                <span class="keywordflow">foreach</span> (Ti succ <span class="keywordflow">in</span> succs)</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;                {</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;                    <span class="keywordtype">int</span> siidx = succ.Index;</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;                    <span class="keywordflow">if</span> (_preConds[siidx].Merge(_curPostCond) ==</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;                        VarAssignmentSet.EMergeResult.Change)</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;                    {</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;                        q.Enqueue(siidx);</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;                    }</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;                }</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;            }</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;            <span class="comment">// Post-process to make sure each variable has at least one assignment location</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;            <span class="comment">// Variables which are not assigned in the course of the program are assumed</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;            <span class="comment">// to possess a &quot;virtual assignment&quot; location at IL index -1.</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; _numLocals; i++)</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;            {</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;                <span class="keywordflow">if</span> (_storePoints[i].Count == 0)</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;                    _storePoints[i].Add(-1);</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;            }</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;        }</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> DetectEliminableAccesses()</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;        {</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;            _writeToRead = <span class="keyword">new</span> Dictionary&lt;int, int&gt;();</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;            _eliminableLocals = <span class="keyword">new</span> HashSet&lt;int&gt;();</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;            _writtenAndNeverRead = <span class="keyword">new</span> HashSet&lt;int&gt;();</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> localIndex = 0; localIndex &lt; _numLocals; localIndex++)</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;            {</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;                <span class="keywordflow">if</span> (IsEliminationInhibited(localIndex))</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;                    <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;                HashSet&lt;int&gt; storePoints = _storePoints[localIndex];</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;                <span class="keywordtype">int</span> numEliminatedAccesses = 0;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;                <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> storePoints)</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;                {</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;                    <span class="keywordflow">if</span> (storePoint &lt; 0)</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;                        <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;                    var storeBB = Code.GetBasicBlockContaining(storePoint);</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;                    HashSet&lt;int&gt; uses = _varUses.Get(storePoint);</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;                    <span class="comment">// Assignment never used?</span></div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;                    <span class="keywordflow">if</span> (DetectWriteAndNeverRead &amp;&amp; uses.Count == 0)</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;                    {</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;                        _writtenAndNeverRead.Add(storePoint);</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;                        numEliminatedAccesses++;</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;                    }</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;                    <span class="comment">// Used exactly once?</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;                    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (DetectReadAfterWrite &amp;&amp; uses.Count == 1)</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;                    {</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;                        <span class="keywordtype">int</span> readPoint = uses.Single();</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;                        var readBB = Code.GetBasicBlockContaining(readPoint);</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;                        <span class="comment">// If variable is read within a different basic block than is</span></div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;                        <span class="comment">// is stored, do not optimize.</span></div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;                        <span class="keywordflow">if</span> (DoNotOptimizeAcrossBasicBlocks &amp;&amp; !readBB.Equals(storeBB))</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;                            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;                        VarAssignmentSet preCond = _preConds[readPoint];</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;                        <span class="keywordflow">if</span> (preCond.HasSideEffects(localIndex))</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;                            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;                        IEnumerable&lt;int&gt; readPointStores = preCond.GetStorePoints(localIndex);</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;                        <span class="comment">// Variable definition must be unambiguous</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;                        <span class="keywordflow">if</span> (readPointStores.Count() != 1)</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;                            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;                        Debug.Assert(readPointStores.Single() == storePoint);</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;                        <span class="comment">//_readAfterWritePairs.Add(new ReadAfterWritePair(storePoint, readPoint));</span></div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;                        _writeToRead[storePoint] = readPoint;</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;                        numEliminatedAccesses++;</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;                    }</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;                }</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;                <span class="keywordflow">if</span> (numEliminatedAccesses == storePoints.Count)</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;                {</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;                    <span class="comment">// All variable accesses could be eliminated</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;                    <span class="comment">// ==&gt; local variable is completely superfluous</span></div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                    _eliminableLocals.Add(localIndex);</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;                }</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;            }</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;        }</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;        <span class="keyword">private</span> <span class="keywordtype">void</span> RenameLocals()</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;        {</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;            HashBasedPropMap&lt;int, int&gt; indexMap = <span class="keyword">new</span> HashBasedPropMap&lt;int, int&gt;();</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;            <span class="keywordtype">int</span> nextIndex = 0;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> localIndex = 0; localIndex &lt; _numLocals; localIndex++)</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;            {</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;                HashSet&lt;int&gt; storePoints = _storePoints[localIndex];            </div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> storePoints)</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                {</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;                    <span class="keywordflow">if</span> (!indexMap.ContainsKey(storePoint))</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;                    {</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;                        indexMap[storePoint] = nextIndex++;</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;                    }</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;                    HashSet&lt;int&gt; uses = _varUses.Get(storePoint);</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;                    <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> usePoint <span class="keywordflow">in</span> uses)</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;                    {</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;                        <span class="keywordflow">if</span> (!indexMap.ContainsKey(usePoint))</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;                        {</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;                            indexMap[usePoint] = nextIndex++;</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;                        }</div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;                    }</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;                }</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;            }</div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;            ISetAdapter&lt;int&gt; a = <span class="keyword">new</span> SetAdapter(indexMap);</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;            IEnumerable&lt;int&gt; orderedKeys = indexMap.Keys.OrderBy(key =&gt; indexMap[key]);</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;            UnionFind&lt;int&gt; uf = <span class="keyword">new</span> UnionFind&lt;int&gt;(a, orderedKeys.ToList());</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> localIndex = 0; localIndex &lt; _numLocals; localIndex++)</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;            {</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;                HashSet&lt;int&gt; storePoints = _storePoints[localIndex];</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;                <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> storePoints)</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                {</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;                    HashSet&lt;int&gt; uses = _varUses.Get(storePoint);</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;                    <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> usePoint <span class="keywordflow">in</span> uses)</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;                    {</div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;                        uf.Union(storePoint, usePoint);</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;                    }</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;                }</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;            }</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;            _renamings = <span class="keyword">new</span> Dictionary&lt;Tuple&lt;int, int&gt;, <span class="keywordtype">int</span>&gt;();</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> localIndex = 0; localIndex &lt; _numLocals; localIndex++)</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;            {</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;                HashSet&lt;int&gt; storePoints = _storePoints[localIndex];</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;                nextIndex = 0;</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;                <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> storePoints)</div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;                {</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                    <span class="keywordtype">int</span> repr = uf.Find(storePoint);</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;                    <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;                    <span class="keywordflow">if</span> (!_renamings.TryGetValue(<a class="code" href="namespace_system_sharp_1_1_meta.html#a6d63cf701a55bdbe2a3bb6df72b1c11daafcbeb58fca053cad573bd9efda1dc5b">Tuple</a>.Create(localIndex, repr), out index))</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;                    {</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;                        index = nextIndex++;</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;                        _renamings[Tuple.Create(localIndex, repr)] = index;</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                    }</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;                    _renamings[Tuple.Create(localIndex, storePoint)] = index;</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;                    HashSet&lt;int&gt; uses = _varUses.Get(storePoint);</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;                    <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> usePoint <span class="keywordflow">in</span> uses)</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;                    {</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;                        _renamings[Tuple.Create(localIndex, usePoint)] = index;</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;                    }</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;                }</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;            }</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;        }</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;</div>
<div class="line"><a name="l00626"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ac21040b373683389a8824e5ee12ae33a">  626</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ac21040b373683389a8824e5ee12ae33a">Run</a>()</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;        {</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;            <a class="code" href="interface_system_sharp_1_1_components_1_1_i_has_attributes.html">IHasAttributes</a> attrs = Code as <a class="code" href="interface_system_sharp_1_1_components_1_1_i_has_attributes.html">IHasAttributes</a>;</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;            <span class="keywordflow">if</span> (attrs != null &amp;&amp; attrs.HasAttribute&lt;<a class="code" href="class_system_sharp_1_1_analysis_1_1_break_on_dataflow_analysis.html">BreakOnDataflowAnalysis</a>&gt;())</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;            {</div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;                Debugger.Break();</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;            }</div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;            <span class="comment">// Fixpoint iteration until the set of pre- and postconditions of each</span></div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;            <span class="comment">// instruction is complete.</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;            IterateToFixPoint();</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;            <span class="comment">// Analyze load points to determine which read accesses can be inlined.</span></div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;            DetectEliminableAccesses();</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;            <span class="comment">// Try to split locals into distinct variables</span></div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;            RenameLocals();</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;        }</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;</div>
<div class="line"><a name="l00651"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a9c90b24a9513b5ecebc5967100f11890">  651</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a9c90b24a9513b5ecebc5967100f11890">IsReadAfterWrite</a>(<span class="keywordtype">int</span> writePoint, out <span class="keywordtype">int</span> readPoint)</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;        {</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;            <span class="keywordflow">return</span> _writeToRead.TryGetValue(writePoint, out readPoint);</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;        }</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;</div>
<div class="line"><a name="l00661"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a8919f404602dea5260556a3ba6126590">  661</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a8919f404602dea5260556a3ba6126590">IsEliminable</a>(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;        {</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;            <span class="keywordflow">return</span> _eliminableLocals.Contains(localIndex);</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;        }</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;</div>
<div class="line"><a name="l00671"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a521e7a778798a49dd7e22530389ce367">  671</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a521e7a778798a49dd7e22530389ce367">IsWrittenAndNeverRead</a>(<span class="keywordtype">int</span> writePoint)</div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;        {</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;            <span class="keywordflow">return</span> _writtenAndNeverRead.Contains(writePoint);</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;        }</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;        <span class="keyword">public</span> ISet&lt;int&gt; WrittenAndNeverReadPoints</div>
<div class="line"><a name="l00680"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a5d2988c24ebb9f6cf287b9929c450655">  680</a></span>&#160;        {</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;            <span class="keyword">get</span> { <span class="keywordflow">return</span> _writtenAndNeverRead; }</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;        }</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;        <span class="keyword">public</span> ISet&lt;int&gt; EliminableLocals</div>
<div class="line"><a name="l00688"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ad563b282b77662885a2b565feed9f4b2">  688</a></span>&#160;        {</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;            <span class="keyword">get</span> { <span class="keywordflow">return</span> _eliminableLocals; }</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;        }</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;</div>
<div class="line"><a name="l00698"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a14766d48f32f14ed78202e71e6f6c382">  698</a></span>&#160;        <span class="keyword">public</span> IEnumerable&lt;int&gt; <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a14766d48f32f14ed78202e71e6f6c382">GetAssignmentsForReadPoint</a>(<span class="keywordtype">int</span> localIndex, <span class="keywordtype">int</span> ilIndex)</div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;        {</div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;            <span class="keywordflow">return</span> _preConds[ilIndex].GetStorePoints(localIndex);</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;        }</div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;</div>
<div class="line"><a name="l00709"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ad2b928ae74ec87246415e51f4d471e06">  709</a></span>&#160;        <span class="keyword">public</span> IEnumerable&lt;int&gt; <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ad2b928ae74ec87246415e51f4d471e06">GetAssignmentsForReadPointFrom</a>(<span class="keywordtype">int</span> localIndex, <span class="keywordtype">int</span> preIlIndex)</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;        {</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;            <span class="keywordflow">return</span> _postConds[preIlIndex].GetStorePoints(localIndex);</div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;        }</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;</div>
<div class="line"><a name="l00719"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#abe18ea2899d84d9d144f0524f76182f9">  719</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">int</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#abe18ea2899d84d9d144f0524f76182f9">GetNumRenamings</a>(<span class="keywordtype">int</span> localIndex)</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;        {</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;            HashSet&lt;int&gt; storePoints = _storePoints[localIndex];</div>
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<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;            <span class="keywordflow">foreach</span> (<span class="keywordtype">int</span> storePoint <span class="keywordflow">in</span> storePoints)</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;            {</div>
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<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;            }</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;            <span class="keywordflow">return</span> renames.Count;</div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;        }</div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;</div>
<div class="line"><a name="l00740"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a16a9ec17258b75d88f2c89db78937f5a">  740</a></span>&#160;        <span class="keyword">public</span> <span class="keywordtype">int</span> <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a16a9ec17258b75d88f2c89db78937f5a">GetRenamingIndex</a>(<span class="keywordtype">int</span> localIndex, <span class="keywordtype">int</span> ilIndex)</div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;        {</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;            <span class="keywordtype">int</span> result;</div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;            <span class="keywordflow">if</span> (!_renamings.TryGetValue(Tuple.Create(localIndex, ilIndex), out result))</div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;                result = 0;</div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;            <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;        }</div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;        <span class="keyword">private</span> <span class="keyword">static</span> List&lt;int&gt; _emptyList = <span class="keyword">new</span> List&lt;int&gt;();</div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;</div>
<div class="line"><a name="l00755"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#afe40cece48e4059c3de71f89d246b2a3">  755</a></span>&#160;        <span class="keyword">public</span> List&lt;int&gt; <a class="code" href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#afe40cece48e4059c3de71f89d246b2a3">GetUsePointsOfRefPoint</a>(<span class="keywordtype">int</span> ilIndex)</div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;        {</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;            List&lt;int&gt; result;</div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;            <span class="keywordflow">if</span> (!_refUses.TryGetValue(ilIndex, out result))</div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;                result = _emptyList;</div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;            <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;        }</div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;    }</div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;}</div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a9c90b24a9513b5ecebc5967100f11890"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a9c90b24a9513b5ecebc5967100f11890">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.IsReadAfterWrite</a></div><div class="ttdeci">bool IsReadAfterWrite(int writePoint, out int readPoint)</div><div class="ttdoc">Queries whether there is a unique read-after-write dependency </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00651">DataflowAnalysis.cs:651</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_control_flow_graph_3_01_ti_01_4_html"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_control_flow_graph_3_01_ti_01_4.html">SystemSharp.Analysis.ControlFlowGraph&lt; Ti &gt;</a></div><div class="ttdoc">This data structure represents a control-flow graph </div><div class="ttdef"><b>Definition:</b> <a href="_controlflow_analysis_8cs_source.html#l00308">ControlflowAnalysis.cs:308</a></div></div>
<div class="ttc" id="namespace_system_sharp_1_1_analysis_html_a5ebdc38449ace206f5d7a926a47adb48"><div class="ttname"><a href="namespace_system_sharp_1_1_analysis.html#a5ebdc38449ace206f5d7a926a47adb48">SystemSharp.Analysis.ELocalVariableAccess</a></div><div class="ttdeci">ELocalVariableAccess</div><div class="ttdoc">Classifies local variable access instructions into categories </div><div class="ttdef"><b>Definition:</b> <a href="_controlflow_analysis_8cs_source.html#l00102">ControlflowAnalysis.cs:102</a></div></div>
<div class="ttc" id="interface_system_sharp_1_1_components_1_1_i_has_attributes_html"><div class="ttname"><a href="interface_system_sharp_1_1_components_1_1_i_has_attributes.html">SystemSharp.Components.IHasAttributes</a></div><div class="ttdoc">An attribute container, i.e. an object which provides per-instance attributes. </div><div class="ttdef"><b>Definition:</b> <a href="_injected_properties_8cs_source.html#l00919">InjectedProperties.cs:919</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_break_on_dataflow_analysis_html"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_break_on_dataflow_analysis.html">SystemSharp.Analysis.BreakOnDataflowAnalysis</a></div><div class="ttdoc">A debugging aid: Any method tagged with this attribute will cause the analysis stage to trigger a bre...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00155">DataflowAnalysis.cs:155</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a98571dcf9f54d0c4b6254dab78fd8c95"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a98571dcf9f54d0c4b6254dab78fd8c95">SystemSharp.Analysis.VarAssignmentSet.GetStorePoints</a></div><div class="ttdeci">IEnumerable&lt; int &gt; GetStorePoints(int localIndex)</div><div class="ttdoc">Returns all reaching definition for a given local variable </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00145">DataflowAnalysis.cs:145</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a2befb94ddad5e22068310af0bd551918"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a2befb94ddad5e22068310af0bd551918">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.DataflowAnalyzer</a></div><div class="ttdeci">DataflowAnalyzer(ControlFlowGraph&lt; Ti &gt; cfg, int numLocals)</div><div class="ttdoc">Constructs a new instance for a given control-flow graph </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00313">DataflowAnalysis.cs:313</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_abe18ea2899d84d9d144f0524f76182f9"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#abe18ea2899d84d9d144f0524f76182f9">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.GetNumRenamings</a></div><div class="ttdeci">int GetNumRenamings(int localIndex)</div><div class="ttdoc">Retrieves the number of renamed variables which emerged from a local variable. </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00719">DataflowAnalysis.cs:719</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a16a9ec17258b75d88f2c89db78937f5a"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a16a9ec17258b75d88f2c89db78937f5a">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.GetRenamingIndex</a></div><div class="ttdeci">int GetRenamingIndex(int localIndex, int ilIndex)</div><div class="ttdoc">Retrieves the renamed variable (sub-)index which is accessed at a given program location. </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00740">DataflowAnalysis.cs:740</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair_html_ac07c9b48c624f7c61b9ab90aedceab41"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_1_1_read_after_write_pair.html#ac07c9b48c624f7c61b9ab90aedceab41">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.ReadAfterWritePair.ReadAfterWritePair</a></div><div class="ttdeci">ReadAfterWritePair(int storePoint, int readPoint)</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00182">DataflowAnalysis.cs:182</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_ad2b928ae74ec87246415e51f4d471e06"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ad2b928ae74ec87246415e51f4d471e06">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.GetAssignmentsForReadPointFrom</a></div><div class="ttdeci">IEnumerable&lt; int &gt; GetAssignmentsForReadPointFrom(int localIndex, int preIlIndex)</div><div class="ttdoc">Retrieves possible IL locations which write to a given local variable and reach all instructions whic...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00709">DataflowAnalysis.cs:709</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a8919f404602dea5260556a3ba6126590"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a8919f404602dea5260556a3ba6126590">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.IsEliminable</a></div><div class="ttdeci">bool IsEliminable(int localIndex)</div><div class="ttdoc">Queries whether a certain local variable may be eliminated, i.e. by replacing it with its right-hand-...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00661">DataflowAnalysis.cs:661</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html">SystemSharp.Analysis.VarAssignmentSet</a></div><div class="ttdoc">This class captures the set of reaching definitions for each variable of a given context ...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00037">DataflowAnalysis.cs:37</a></div></div>
<div class="ttc" id="interface_system_sharp_1_1_analysis_1_1_i_instruction_html"><div class="ttname"><a href="interface_system_sharp_1_1_analysis_1_1_i_instruction.html">SystemSharp.Analysis.IInstruction</a></div><div class="ttdoc">This interface associates instructions with a unique, 0-based indices </div><div class="ttdef"><b>Definition:</b> <a href="_controlflow_analysis_8cs_source.html#l00032">ControlflowAnalysis.cs:32</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a78f7229839d2f3992ffe9d74595018bb"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a78f7229839d2f3992ffe9d74595018bb">SystemSharp.Analysis.VarAssignmentSet.VarAssignmentSet</a></div><div class="ttdeci">VarAssignmentSet(int numVariables)</div><div class="ttdoc">Constructs a new instance for a specific number of local variables </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00054">DataflowAnalysis.cs:54</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a8f5e94e3e905906e19c66700e57f603f"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a8f5e94e3e905906e19c66700e57f603f">SystemSharp.Analysis.VarAssignmentSet.EMergeResult</a></div><div class="ttdeci">EMergeResult</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00039">DataflowAnalysis.cs:39</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a05d39f38821f17dd2480f3444ea1ac70"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a05d39f38821f17dd2480f3444ea1ac70">SystemSharp.Analysis.VarAssignmentSet.Merge</a></div><div class="ttdeci">EMergeResult Merge(VarAssignmentSet other)</div><div class="ttdoc">Merges another state into this state by taking the set unions of all their respective reaching defini...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00111">DataflowAnalysis.cs:111</a></div></div>
<div class="ttc" id="interface_system_sharp_1_1_analysis_1_1_i_instruction_info_3_01_ti_01_4_html"><div class="ttname"><a href="interface_system_sharp_1_1_analysis_1_1_i_instruction_info_3_01_ti_01_4.html">SystemSharp.Analysis.IInstructionInfo&lt; Ti &gt;</a></div><div class="ttdoc">Generic interface for services classifying instructions of some type </div><div class="ttdef"><b>Definition:</b> <a href="_controlflow_analysis_8cs_source.html#l00163">ControlflowAnalysis.cs:163</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a14766d48f32f14ed78202e71e6f6c382"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a14766d48f32f14ed78202e71e6f6c382">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.GetAssignmentsForReadPoint</a></div><div class="ttdeci">IEnumerable&lt; int &gt; GetAssignmentsForReadPoint(int localIndex, int ilIndex)</div><div class="ttdoc">Retrieves possible IL locations which write a to given local variable and reach a specified IL locati...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00698">DataflowAnalysis.cs:698</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a74c43889538964f79dac1fea9a121ad2"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a74c43889538964f79dac1fea9a121ad2">SystemSharp.Analysis.VarAssignmentSet.SetInitial</a></div><div class="ttdeci">void SetInitial()</div><div class="ttdoc">Constructs an initial state by indiciating each variable to be reached by a virtual entry point with ...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00086">DataflowAnalysis.cs:86</a></div></div>
<div class="ttc" id="namespace_system_sharp_1_1_meta_html_a6d63cf701a55bdbe2a3bb6df72b1c11daafcbeb58fca053cad573bd9efda1dc5b"><div class="ttname"><a href="namespace_system_sharp_1_1_meta.html#a6d63cf701a55bdbe2a3bb6df72b1c11daafcbeb58fca053cad573bd9efda1dc5b">SystemSharp.Meta.Tuple</a></div><div class="ttdoc">All kinds of CLI Tuple </div></div>
<div class="ttc" id="interface_system_sharp_1_1_analysis_1_1_i_extended_instruction_info_3_01_ti_01_4_html"><div class="ttname"><a href="interface_system_sharp_1_1_analysis_1_1_i_extended_instruction_info_3_01_ti_01_4.html">SystemSharp.Analysis.IExtendedInstructionInfo&lt; Ti &gt;</a></div><div class="ttdoc">An extended instruction information service, supporting information on instructions dealing with memo...</div><div class="ttdef"><b>Definition:</b> <a href="_controlflow_analysis_8cs_source.html#l00292">ControlflowAnalysis.cs:292</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_a521e7a778798a49dd7e22530389ce367"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#a521e7a778798a49dd7e22530389ce367">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.IsWrittenAndNeverRead</a></div><div class="ttdeci">bool IsWrittenAndNeverRead(int writePoint)</div><div class="ttdoc">Queries whether a write access is actually superfluous because the assigned value is never read ...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00671">DataflowAnalysis.cs:671</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a432b64aa90a8a7c2a4aaeef65f6e7bb3"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a432b64aa90a8a7c2a4aaeef65f6e7bb3">SystemSharp.Analysis.VarAssignmentSet.HasSideEffects</a></div><div class="ttdeci">bool HasSideEffects(int localIndex)</div><div class="ttdoc">Queries whether there is a possible side effect on a particular variable </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00078">DataflowAnalysis.cs:78</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_ac21040b373683389a8824e5ee12ae33a"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#ac21040b373683389a8824e5ee12ae33a">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.Run</a></div><div class="ttdeci">void Run()</div><div class="ttdoc">Executes data-flow analysis </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00626">DataflowAnalysis.cs:626</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4_html_afe40cece48e4059c3de71f89d246b2a3"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_dataflow_analyzer_3_01_ti_01_4.html#afe40cece48e4059c3de71f89d246b2a3">SystemSharp.Analysis.DataflowAnalyzer&lt; Ti &gt;.GetUsePointsOfRefPoint</a></div><div class="ttdeci">List&lt; int &gt; GetUsePointsOfRefPoint(int ilIndex)</div><div class="ttdoc">Retrieves the program locations which derefence a local variable which is referenced at a given progr...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00755">DataflowAnalysis.cs:755</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a58ca9909b9d7936af913bc8e09e4d609"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a58ca9909b9d7936af913bc8e09e4d609">SystemSharp.Analysis.VarAssignmentSet.Assign</a></div><div class="ttdeci">void Assign(int localIndex, int rhs)</div><div class="ttdoc">Updates the state by adding a reaching definition to a certain variable </div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00097">DataflowAnalysis.cs:97</a></div></div>
<div class="ttc" id="class_system_sharp_1_1_analysis_1_1_var_assignment_set_html_a7d9c349760703613a0666c434a0fe636"><div class="ttname"><a href="class_system_sharp_1_1_analysis_1_1_var_assignment_set.html#a7d9c349760703613a0666c434a0fe636">SystemSharp.Analysis.VarAssignmentSet.IndicateSideEffects</a></div><div class="ttdeci">void IndicateSideEffects()</div><div class="ttdoc">Indicates that there are unmanageable side effects on all local variables, denying the validity of re...</div><div class="ttdef"><b>Definition:</b> <a href="_dataflow_analysis_8cs_source.html#l00064">DataflowAnalysis.cs:64</a></div></div>
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